9-137619029-A-G

Position:

• chr9-137619029-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 10P and 2B. PVS1 PM2 BP6_Moderate

The NM_024757.5(EHMT1):​c.1A>G​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000243 in 823,952 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000024 (0 hom.)
• Consequence: EHMT1 NM_024757.5 start_lost
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.58

Genes affected

EHMT1 (HGNC:24650): (euchromatic histone lysine methyltransferase 1) The protein encoded by this gene is a histone methyltransferase that methylates the lysine-9 position of histone H3. This action marks the genomic region packaged with these methylated histones for transcriptional repression. This protein may be involved in the silencing of MYC- and E2F-responsive genes and therefore could play a role in the G0/G1 cell cycle transition. Defects in this gene are a cause of chromosome 9q subtelomeric deletion syndrome (9q-syndrome, also known as Kleefstra syndrome). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2017]

EHMT1 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 9-137619029-A-G is Benign according to our data. Variant chr9-137619029-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 1094639.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EHMT1	NM_024757.5	c.1A>G	p.Met1?	start_lost	1/27	ENST00000460843.6	NP_079033.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EHMT1	ENST00000460843.6	c.1A>G	p.Met1?	start_lost	1/27	5	NM_024757.5	ENSP00000417980.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000243 AC: 2 AN: 823952 Hom.: 0 Cov.: 17 AF XY: 0.00000262 AC XY: 1 AN XY: 381028

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000266

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

Alfa AF: 0.0000843 Hom.: 0

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Kleefstra syndrome 1 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 09, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.024	T
BayesDel_noAF	Benign	-0.27
CADD	Benign	21
DANN	Benign	0.89
DEOGEN2	Benign	0.050	T;.;T
Eigen	Benign	-0.61
Eigen_PC	Benign	-0.63
FATHMM_MKL	Benign	0.070	N
LIST_S2	Uncertain	0.90	D;D;D
M_CAP	Pathogenic	0.97	D
MetaRNN	Pathogenic	0.88	D;D;D
MetaSVM	Benign	-0.89	T
PROVEAN	Benign	-0.31	N;N;.
REVEL	Benign	0.11
Sift	Pathogenic	0.0	D;D;.
Sift4G	Pathogenic	0.0	D;D;.
Polyphen		0.0	B;B;.
Vest4		0.67
MutPred		0.98		Gain of helix (P = 0.132);Gain of helix (P = 0.132);Gain of helix (P = 0.132);
MVP		0.65
ClinPred		0.25	T
GERP RS		0.15
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.66
gMVP		0.11

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1410326559; hg19: chr9-140513481;